spacial target的用法和样例：
例句
- Our results show that the method proposed in this paper can efficiently describe the luminant characters of the space target.
研究结果表明，文中方法能有效地描述空间目标在天基光电望远镜中的光度特征。 - On the aspect of observation time, it has limited efficiency for low earth orbit target space-based observation, and good efficiency for high earth orbit observation.
在可见时间方面，天基空间目标光学监视系统对低轨目标的监视能力有限，而对高轨目标具有良好的监视性能。
